html,body{
    height: 100%;
    margin: 0;
    overflow-y:hidden;
}
.screen{
    background-color: rgb(224, 221, 221);
    margin-bottom: -22px;
    height: 100%;
}
.wapper{
    background-color: #fff;
    height: 100%;
}
.head{
    font-weight: bolder;
    font-size: 30px;
}
span{
    font-size: 4px;
    color: rgb(241, 238, 238);
    margin-top: 23px;
}
.scrollBody {
    position: relative;
    height: 200px;
    margin-top: .5rem;
    overflow-y: scroll;
}
.scrollBody2{
    position: relative;
    height: 482px;
    overflow-y: scroll;
    overflow-x: hidden;
}
.scrollBody3{
    position: relative;
    height: 200px;
    margin-top: .5rem;
    overflow: auto;	/* auto也是可以的 */
}
.redColor{
    color: red;
}

